An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.
NSN 5895-00-620-7209
NSN 5895-01-426-2285
NSN 5895-01-274-3422
NSN 4140-01-462-1336
NSN 6110-01-590-0479
NSN 6685-01-114-7364
NSN 5960-01-614-0489
NSN 6150-01-182-7209
NSN 5945-01-556-0768
NSN 6650-00-045-8355
NSN 6105-01-235-9100
NSN 5950-01-043-3553